Slip Ring Rotor Resistance Calculation

The resistance value of 9 times higher than of a slip ring rotor resistance is connected externally to experience maximum starting torque.

Slip ring rotor resistance calculation.

Rotor resistance starting slip ring induction motor srim. These motors are usually started with full line voltage applied across its terminals. We can able to add external resistance through slip ring in the rotor circuit. Rotor resistance starter in three phase induction motor electrical academy.

As these motors have external resistance connected to its rotor circuit the value of starting current is adjusted or kept minimum by increasing the resistance of the rotor circuit. I am a student of electrical enginnering it helped me alot in my electrical paper of chapter slip ring. This gives the three phase motor having three sets of resistors each set having resistors about 6 to 8 connected in. The rotor had a external resistance which is connected to it.

Only for you 32 662 views. Prity 24 february 2014 at 03 02. The value of starting current is adjusted by adding up external resistance to its rotor circuit. Starting of slip ring induction motors.

Incase of a squirrel cage induction motor the value of rotor resistance is very low which leads to heavy starting current requirement. Slip ring i m provides high starting torque. The slip ring or wound rotor motor is an induction machine where the rotor comprises a set of coils that are terminated in sliprings to which external impedances can be connected. Overhead crane slip ring motor resistance calculation duration.

So at the starting because of the high rotor resistance we get low starting current which helps to start motor without any damage. Actually a slip ring motor had a rotor which is known as wound rotor. Slip ring induction motor speed control the speed control of this motor can be done using two methods which include the following. We saw some of the applications of this motor.

But in case of slip ring motors the rotor resistance is increased by the addition of external resistance. The rotor circuit resistance has significant impact on starting torque the speed at which the breakdown torque occurs and the slip during the normal running operation. The stator is the same as is used with a standard squirrel cage motor.